Calculating k Factor

Most researchers refer to the maximum speed of a rotor to compare efficiency. This can be misleading as factors such as tube geometry and temperature contribute to rotor performance and must also be considered.

Separation is affected by maximum speed and radius which together determine maximum g-force. However, particle pathlength also affects separation time. A simple measure of overall rotor efficiency incorporating both g-force and particle pathlength is the k Factor. Generally, the lower the k Factor, the shorter the run time. This makes the k Factor one of the most important considerations when selecting a rotor.

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